SNA US 12K – Split-Phase Off-Grid Battery Storage Inverter
High-Power Solar Inverter for Independent Residential Energy Systems
Structure & Highlights
The SNA US 12K is a rugged, high-performance split-phase off-grid inverter designed to deliver reliable power to homes and businesses operating on 120/240V split-phase systems. This all-in-one unit integrates a pure sine wave inverter, dual MPPT solar charge controller, AC charger, and intelligent battery management in a compact form.
It’s the ideal solution for off-grid or backup power systems in areas with weak or no grid connectivity. With a 12,000W output and surge power handling, it can run heavy residential appliances, power tools, or small commercial systems with ease.
Technical Specifications
| Feature | SNA US 12K |
|---|---|
| Rated Output Power | 12,000W |
| Surge Capacity | Up to 2× rated power (10s) |
| Output Voltage/Frequency | 120/240V Split-Phase, 50/60Hz (Auto-sensing) |
| Waveform | Pure Sine Wave |
| AC Output Phases | Split-Phase (L1-N-L2) |
| Max PV Input Power | 14,000W |
| Max PV Input Voltage | 500V DC |
| MPPT Voltage Range | 120V–450V DC |
| Number of MPPT Trackers | 2 |
| Max Solar Charging Current | 200A |
| Battery Voltage | 48V DC nominal |
| Battery Type Support | Lithium-ion / LFP / Lead-acid |
| AC Charging Current | Up to 100A |
| AC Input Voltage Range | 90–140V (per leg) / 180–280V (L1–L2) |
| Efficiency | ≥ 93% |
| Communication Ports | RS485, CAN, optional Wi-Fi/GPRS |
| Protection Features | Short Circuit, Overload, Over-Temp, Battery Safety |
| Display Interface | LCD Screen + LED indicators |
| Enclosure Rating | IP21 (indoor) |
| Cooling Method | Intelligent Fan Cooling |
| Dimensions (mm) | ~590 × 400 × 180 |
| Weight | Approx. 28–32 kg |
| Warranty | 5 Years (extendable) |
Application
Core Features
✅ Off-grid homes with high energy consumption
✅ Small commercial or agricultural facilities
✅ Emergency backup for areas with unreliable grid
✅ Remote cabins, lodges, and eco-tourism sites
✅ North American and Caribbean split-phase power environments
✅ Split-Phase Output (120/240V) – Run appliances, tools, and split loads with ease
✅ Dual MPPT Solar Controller – Independent tracking for different solar strings
✅ Smart Battery Support – Supports multiple chemistries (LFP, AGM, GEL, etc.)
✅ Generator Integration – Built-in AC input for charging from gensets
✅ Remote Monitoring (Optional) – Connect via Wi-Fi or GPRS for real-time updates
✅ Comprehensive Protections – Built-in safety systems for secure operation
How SNA US 12K Powers Your Home
The SNA US 12K is designed to provide independent, resilient, and clean power for modern homes using split-phase electricity:
✅ Daytime Solar Operation: Power loads directly from PV during the day
✅ Night Backup: Store solar energy in batteries for nighttime use
✅ Load Balancing: Simultaneously supply both 120V and 240V appliances
✅ Zero Grid Dependency: Ideal for rural, off-grid, or emergency usage
✅ Reduce Generator Runtime: Maximize solar usage, minimize fuel costs